Possibility of early detection of graft incompatibility in some commercial plum cultivars by phenolic compounds analysis
Ganji Moghadam, Ebrahim | Arghavan, Sara | Fahadan, Ahmad | Zamanipour, Mahboubeh
The incidence of incompatibility signs in the grafting point can be delayed, and the analysis of phenols is used as an applicable early sign for the detection of graft incompatibility. Accordingly, this study mainly aimed to investigate compatibility/incompatibility in 10 commercial plum cultivars grafted on myrobalan and apricot rootstocks, followed by determining the role of phenols in graft incompatibility. The evaluated cultivars included Santarosa, Ghatreh tala, Shams, Dargazi, No. 16, No. 17, Laroda, Simka, Bokhara, and Stanley. The results showed significant differences in the stem diameter. The union graft location in Shams, Laroda, Simka, Stanley, and Ghatreh tala cultivars on apricot rootstock was thicker than the scions and stocks. Phenolic compounds in the union graft decreased in all plum cultivars on myrobalan rootstock in comparison with other sites. Finally, the most phenolic accumulation belonged to the union graft on Santarosa, Ghatreh tala, and Shams on apricot rootstocks. Therefore, it seems that phenolic compounds in plums can be used as a biochemical marker in graft incompatibility.
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